spark a big >> happening now, president obama is announcing leadership changes in his cabinet. some are already proving to be controversial. our reporter is live in the newsroom with the latest. >> the last hour, president obama announced the nomination for two very important cabinet positions. republican chuck hagel for secretary of against and john brennan for director of the c.i.a. both picks are criticized by both parties. decorated vietnam veteran and former nebraska senator hagel has made comments not forgotten and could lead to tough questioning and a long confirmation process. back in 2010 he called the troop surge in iraq a "mistake," drawing criticism great his party. today, president obama stands by his decision saying "chuck hagel is the leader our troops deserve identity noting the involvement with the v.a. and uso he would be the first of enlisted rank to serve as secretary of defense. one of the few secretary whose have been wounded in war. and the first vietnam veteran to lead the department. as i saw during our business together in afghanistan and iraq, in chuc